A - Human Necessities – 01 – D
Patent
A - Human Necessities
01
D
A01D 34/74 (2006.01) A01D 34/67 (2006.01) H02K 9/00 (2006.01) H02K 9/22 (2006.01) H02K 7/14 (2006.01)
Patent
CA 2430429
A lawnmower comprising a generally horizontal metal deck having a top surface and a downwardly extending peripheral skirt, an electric motor mounted centrally of the deck rotating a vertical shaft carrying a horizontally disposed cutting blade below the deck within the skirt, wherein the motor comprises a heat dissipative brushless electric motor assembly comprising a hub which has a center through opening, an annular heat sink attached to said hub, said heat sink constructed of a heat conductive material, said heat sink being of a larger diameter than said hub, a controller for the motor, some of the heat that is generated by said controller to be conducted through said heat sink, a stator being fixedly mounted on said hub, said stator including wire coils which generate heat during operation of said motor assembly, and a rotor mounted about said stator, said rotor being secured to the shaft, said shaft being rotationally mounted within said center through opening, upon passing of an electrical current through said wire coils said rotor is rotated which rotates said shaft, wherein said heat sink is secured to the deck of the lawnmower to permit heat to be dissipated from the heat sink to the deck.
Fasken Martineau Dumoulin Llp
Jager Willem
Snowbear Limited
LandOfFree
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